Nearbyatom
Member
I have a RS485 modbus network. I'm looking at an HMI and a modem as a masters, and I have a proprietary board as a slave.
Obviously we can't have 2 masters on the same network. So I was thinking of using a DPDT switch to switch between masters. RS485 is 2 wires, so have NO wired to 1 master, and the NC wired to the 2nd?
Thoughts?
Obviously we can't have 2 masters on the same network. So I was thinking of using a DPDT switch to switch between masters. RS485 is 2 wires, so have NO wired to 1 master, and the NC wired to the 2nd?
Thoughts?